Journal-bearing.



R. T. PEARCE.

JOURNAL BEARING.

APPLIOATION FILED MAY 21, 1904.

1,021,846 I Patten tied Apr.'2, 1912.

i- TAIES PATENT-OFFICE? L JTOILZZ whom concern: t Be-it known-that I, Roniin'rzTi' Pnancn, a

f. Sign cqnm aps cn oaeo, ILLInoIs,Acoaromirron or nmmo 's.

i citizen pfl jtlle United States, residing "at -I Montcla1r, inthe county of Essex and State of New Jersey, have invented certain new v and useful Improvementsin Journal-Bear 1ngs, ofwh1ch*the following 15 a description, reference. being had to the accompanyingdrawings, forming :part of this specification. Y

invention relates more particularly to journal bearings for..,concentrators for beltconvey'ers and has for its object the improved construction of such bearings, all as hereinafter more fully described "and part-icularly pointed out in the claims.

In the accompanying drawings Figure 1 IS an elevation, partly in sectlon, of a concentrator fora belt conveyor, embodying my invention, being one of the concentrators upon which theupper loaded side of the belt rests and travels; and Fig. 2 a corresponding view of the complementary support for the lower or return side of the belt.

In Fig. 1, A A represent the dishpans or f bells which serve to support the opposite edges of the conveyer belt B, while O C are flat-faced pulleys upon which its middle portion travels, the relative diameters of these outer and middle supports for the belt being such as to give it the properv sag or concavity to retain the material carried by it. The pulleys C C are fast upon the shaft D, which is journaled at its opposite ends in journal boxes or bearings G'G carried by (and in the present instance formed integral with) supporting brackets E E. These journal boxes and associated parts are similar in construction, one being shown in section and the other in elevation. The bells A A are loose upon the shaft D, being held from lateral play thereon by set' collars F F which confine them between the collars and the inner ends of the journal boxes G G. The bells AA are provided with outwardly extended hubsa. which. fit'between the ends of the shaft D and theboxcs G G. The shaft D thus has its immediate bearings in the hubs a of the bells A' A, while the latter, in turn, have their hearings in the fixed diameter ofthe pulleys C C they will necessarily be given more revolutions by the con- Specification of Letters Patenti i Palte ntedApr. 2,1912. Application filed May 21, 1904. Serial No. 209,056. v

' veyer belt than will be the bells A A- supportingthe' outer edges of said belt; and as the pulleys C C are fast:upon,the shaft 1) theglh-tter, will turn at greater speed than the'gfhubs a of said bells, in which the shaft" has its bearings, but as the bells are turning. in the same direction,as the pulleys and,

shaft, at a slower speed, the relative movement of the shaft in its bearings (i. 6., the hubs a), will be simply that due to the difference inspeedof the "shaftfand ;l111b,l nd therefore much less than if the shaftwere non narr. .IEEARGE, or Mon rc-IAm,-nnw JnRsnY, Assxeivonj r011. w. CALDWELL &

directly journaledin fixed bearings. vThe construction described also" provides the bells A A with comparatively large bearing surfaces in the fixed journalboxes GGr, 'Wlth the advantagesincidentthereto. The

journal boxes G G are open at. their outer as well as their inner ends, and are exteriorly threaded to receive screw caps H H having somewhat extended engagement with the ends of the boxes, so that 'after being first applied to the ends of, the boxes they. may be screwed inward thereon for a considerable distance. These caps H H constitute grease cups, and by filling them, as well as the interior of the journal boxes,

with lubricant, before applying the caps, v

such lubricant may be forced inward be tween the shaft andthe hubs of the bells, and between the hubs and the journalboxes, to lubricate said bearings. The extended threaded engagement of the caps or grease cups with the journal boxes will permit said caps to be screwed farther inward from timeto time, to supply additional lubricant to the bearings as needed. When they have reached their limit of inward movement they can be removed and refilled with lubricant, and-re-applied to the ends of the boxes and the bearings thus be he at su I a a n pl1ed with lubricant. The foregoing constructionand arrangement of parts thus not only affords improyedbearings for the ends of the shaft and for the bells, but greatly facilitates their lubrication.

v On the lower support for the belt B shown in Fig. 2, there are four flat-faced pulleys C secured to the shaft D which is journaled at its opposite ends in tubular-boxes or bearings G; G carried by depending brackets E. The outer ends of the boxes G G are exteriorly threaded to receive caps H which form grease cups to hold a supply of lubrition I claim:

catingmaterial, and by which such material may be forced inward to lubricate the bearings, as before stated.

It will of course be understood that the number? of pulleys employed upon the shafts D and D depends upon the width of the .conveyer belt.

Where more than two are employed upon the shaft D it is not essential that they shall all be fast upon the shaft. Thus, if three be employed, the two outer ones may be made fast to the shaft and the middle one-left loose, or the middle one may be made'fast and the outer ones left loose. Likewise, while I preferably employ the set collars F for holding the bells A in position on the shaft D, said shaft may itself be provided with shoulders for that purpose and the set collars be dispensed. with, or the pulleys C (inlay have extended hubs of sufiicient length to abut against the bells A and take the place of the set collars.

Having thus fully described myinven- .1. In a concentrator bearing, a journal box, a bell whose hub extends into and has its bearing. in saidjournal box, and a shaft. having its bearing in the hub of the bell; substantially as described.

2'. A concentrator bearing comprising supporting brackets, .journal boxes formed integral with said brackets, bells having outwardly extending hubs fitting in the journal boxes, a shaft journaled at its opposcribed.

site ends in the hubs of the bells, and set collars on the shaft. 4 l 3. The herein described concentratorbearing comprising supporting brackets openended journal box formed inte'glrztl herewith, bells having iutwardly extended hubs journaled' in the boxes, a shaft- ;iournaled at its apposite ends in the hubs of the bells, set collars on the shatt and caps secured upon the outerend of the journal boxes.

4.111 a device of the class described, the combination of a bearing open at both ends,

a bell having a hollow hub rotatively niounted in the bearing, a shaft having its bearing in thehub of the bell and carrying a pulley of less diameter than the bell, the outer end of the bearing forming a packing box communicating with the space between the hub of the bell and the bearingand be,- t-ween the hub of the bell and the shaft re spectively, and a cap for closing the outer end of the bearing.

5. In a belt conveyor, a pair of journal boxes, bells having hubs fitting in said boxes, a. shaft journaled at its opposite ends-in said hubs, and-pulleys upon said shaft of less diameter than said bells; substantially as de- ROBERT T. PEARCE. [n 5.

Witnesses EDWARD P. PHILLIPS, RALPH P. PHILLIPS. 

